* { margin:0; padding:0; box-sizing:border-box; }

:root {
  --bg: #0a0e1a;
  --bg2: #111827;
  --bg3: #1f2937;
  --border: #374151;
  --text: #e5e7eb;
  --text2: #9ca3af;
  --accent: #8b5cf6;
  --accent2: #a78bfa;
  --green: #10b981;
  --red: #ef4444;
  --orange: #f59e0b;
  --blue: #3b82f6;
  --gold-color: #fbbf24;
  --ruby-color: #f43f5e;
  --crystal-color: #06b6d4;
  --energy-color: #facc15;
  --radius: 8px;
}

body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); display: flex; height: 100vh; overflow: hidden; }

/* ── Login ── */
#login-screen { position: fixed; inset: 0; background: linear-gradient(135deg, #0a0e1a 0%, #1a1040 100%); display: flex; align-items: center; justify-content: center; z-index: 9999; }
.login-box { background: var(--bg2); padding: 40px; border-radius: 16px; border: 1px solid var(--border); width: 380px; text-align: center; box-shadow: 0 0 60px rgba(139,92,246,.15); }
.login-logo { font-size: 48px; margin-bottom: 8px; }
.login-box h1 { font-size: 24px; margin-bottom: 8px; background: linear-gradient(135deg, var(--accent), var(--gold-color)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.login-box p { color: var(--text2); margin-bottom: 24px; font-size: 14px; }
.login-box input { width: 100%; padding: 12px 16px; background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 14px; margin-bottom: 16px; outline: none; }
.login-box input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(139,92,246,.2); }
.login-box button { width: 100%; padding: 12px; background: linear-gradient(135deg, var(--accent), #7c3aed); color: #fff; border: none; border-radius: var(--radius); font-size: 14px; font-weight: 600; cursor: pointer; transition: all .2s; }
.login-box button:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(139,92,246,.4); }
.login-error { color: var(--red); font-size: 13px; margin-bottom: 12px; display: none; }

/* ── Sidebar ── */
.sidebar { width: 230px; background: var(--bg2); border-right: 1px solid var(--border); display: flex; flex-direction: column; flex-shrink: 0; }
.sidebar-header { padding: 20px 16px; border-bottom: 1px solid var(--border); }
.sidebar-header h2 { font-size: 16px; font-weight: 700; }
.sidebar-header span { font-size: 11px; color: var(--text2); }
.icon-game { font-size: 18px; }
.sidebar nav { flex: 1; padding: 8px 0; overflow-y: auto; }
.sidebar nav a { display: flex; align-items: center; gap: 10px; padding: 10px 16px; color: var(--text2); text-decoration: none; font-size: 13px; transition: all .15s; }
.sidebar nav a:hover { color: var(--text); background: var(--bg3); }
.sidebar nav a.active { color: var(--accent2); background: rgba(139,92,246,.1); border-right: 3px solid var(--accent); }
.nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-divider { height: 1px; background: var(--border); margin: 6px 16px; }
.sidebar-footer { padding: 12px 16px; border-top: 1px solid var(--border); }
.sidebar-footer .status { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text2); margin-bottom: 4px; }
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot.up { background: var(--green); box-shadow: 0 0 6px var(--green); }
.dot.down { background: var(--red); box-shadow: 0 0 6px var(--red); }
.dot.unknown { background: var(--text2); }

/* ── Main ── */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar { padding: 16px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; background: var(--bg2); }
.topbar h1 { font-size: 18px; font-weight: 600; }
.topbar .logout { background: none; border: 1px solid var(--border); color: var(--text2); padding: 6px 14px; border-radius: var(--radius); cursor: pointer; font-size: 12px; }
.topbar .logout:hover { color: var(--red); border-color: var(--red); }
.content { flex: 1; padding: 24px; overflow-y: auto; }
.page { display: none; }
.page.active { display: block; }

/* ── Stat Cards ── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: 12px; padding: 20px; transition: transform .15s; }
.stat-card:hover { transform: translateY(-2px); }
.stat-card .label { font-size: 12px; color: var(--text2); margin-bottom: 6px; }
.stat-card .value { font-size: 28px; font-weight: 700; }
.stat-card .value.green { color: var(--green); }
.stat-card .value.red { color: var(--red); }
.stat-card .value.orange { color: var(--orange); }
.stat-card .value.blue { color: var(--blue); }

/* ── Resource Icons (ảnh game thật) ── */
.res-icon { display: inline-block; width: 20px; height: 20px; vertical-align: middle; margin-right: 3px; background-size: contain; background-repeat: no-repeat; background-position: center; }
.res-icon.gold { background-image: url('/img/coin.png'); }
.res-icon.ruby { background-image: url('/img/ruby.png'); }
.res-icon.crystal { background-image: url('/img/gem_blue.png'); }
.res-icon.energy { background-image: url('/img/energy.png'); }
.res-icon.exp { background-image: url('/img/gem_gold.png'); }
.res-icon.star-w { background-image: url('/img/gem_white.png'); }
.res-icon.star-b { background-image: url('/img/gem_blue.png'); }
.res-icon.star-r { background-image: url('/img/gem_red.png'); }
.res-icon.shield { background-image: url('/img/gem_shield.png'); }
.res-icon.hp { background-image: url('/img/gem_hp.png'); }
.res-icon.stone { background-image: url('/img/stones.png'); background-size: 400%; background-position: 0 0; }
.res-icon.pet { background-image: url('/img/pet_sample.png'); }
.res-icon.card { background-image: url('/img/card_sample.png'); }
.res-icon.elem-fire { background-image: url('/img/elem_fire.png'); }
.res-icon.elem-water { background-image: url('/img/elem_water.png'); }
.res-icon.elem-earth { background-image: url('/img/elem_earth.png'); }
.res-icon.elem-metal { background-image: url('/img/elem_metal.png'); }
.res-icon.elem-wood { background-image: url('/img/elem_wood.png'); }
/* Kích thước lớn hơn cho stat card / resource grid */
.res-icon.lg { width: 28px; height: 28px; }
.res-icon.xl { width: 36px; height: 36px; }

/* ── Resource Grid (Player Detail) ── */
.resource-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.res-card { background: var(--bg3); border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.res-card .res-label { font-size: 11px; color: var(--text2); margin-bottom: 4px; }
.res-card .res-val { font-size: 20px; font-weight: 700; }
.res-card .res-val.gold { color: var(--gold-color); text-shadow: 0 0 8px rgba(251,191,36,.3); }
.res-card .res-val.ruby { color: var(--ruby-color); text-shadow: 0 0 8px rgba(244,63,94,.3); }
.res-card .res-val.crystal { color: var(--crystal-color); text-shadow: 0 0 8px rgba(6,182,212,.3); }
.res-card .res-val.energy { color: var(--energy-color); text-shadow: 0 0 8px rgba(250,204,21,.3); }
.res-card .res-val.star-w { color: #e5e7eb; }
.res-card .res-val.star-b { color: #60a5fa; text-shadow: 0 0 8px rgba(96,165,250,.3); }
.res-card .res-val.star-r { color: #f43f5e; text-shadow: 0 0 8px rgba(244,63,94,.3); }

/* ── Reward Cell ── */
.reward-cell { font-size: 12px; max-width: 260px; }
.text-muted { color: var(--text2); }

/* ── Code Display ── */
.code-display { background: rgba(139,92,246,.15); color: var(--accent2); padding: 2px 8px; border-radius: 4px; font-size: 12px; font-weight: 600; letter-spacing: .5px; }

/* ── Table ── */
.table-wrap { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead { background: var(--bg3); }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { font-weight: 600; font-size: 11px; text-transform: uppercase; color: var(--text2); letter-spacing: .5px; }
tr:hover { background: rgba(255,255,255,.02); }
.badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 11px; font-weight: 600; }
.badge-green { background: rgba(16,185,129,.15); color: var(--green); }
.badge-red { background: rgba(239,68,68,.15); color: var(--red); }
.badge-orange { background: rgba(245,158,11,.15); color: var(--orange); }
.badge-blue { background: rgba(59,130,246,.15); color: var(--blue); }

/* ── Tab Bar ── */
.tab-bar { display: flex; gap: 4px; margin-bottom: 16px; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 4px; }
.tab-btn { flex: 0; padding: 8px 18px; background: none; border: none; color: var(--text2); font-size: 13px; font-weight: 500; cursor: pointer; border-radius: 8px; transition: all .15s; white-space: nowrap; }
.tab-btn:hover { color: var(--text); background: var(--bg3); }
.tab-btn.active { color: #fff; background: var(--accent); }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; color: var(--text2); margin-bottom: 6px; font-weight: 600; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 12px; background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text); font-size: 13px; outline: none; transition: border-color .15s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(139,92,246,.15); }
.form-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border: none; border-radius: var(--radius); font-size: 13px; font-weight: 600; cursor: pointer; transition: all .15s; }
.btn:hover { opacity: .85; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: var(--green); color: #fff; }
.btn-danger { background: var(--red); color: #fff; }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 5px 10px; font-size: 11px; }

.search-bar { display: flex; gap: 8px; margin-bottom: 16px; }
.search-bar input { flex: 1; }
.search-bar .btn { flex-shrink: 0; }

.section-title { font-size: 15px; font-weight: 600; margin-bottom: 12px; }
.panel { background: var(--bg2); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 16px; }

/* ── Toast ── */
.toast-container { position: fixed; top: 16px; right: 16px; z-index: 10000; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 12px 20px; border-radius: var(--radius); font-size: 13px; font-weight: 500; animation: slideIn .3s; min-width: 280px; box-shadow: 0 4px 12px rgba(0,0,0,.3); }
.toast-success { background: var(--green); color: #fff; }
.toast-error { background: var(--red); color: #fff; }
@keyframes slideIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: none; } }

/* ── Room detail ── */
.room-card { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; }
.room-card h4 { margin-bottom: 8px; }
.player-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.hp-bar { flex: 1; height: 8px; background: var(--bg); border-radius: 4px; overflow: hidden; }
.hp-bar-fill { height: 100%; border-radius: 4px; transition: width .3s; }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; font-size: 13px; }
.detail-grid dt { color: var(--text2); }
.detail-grid dd { font-weight: 600; text-align: right; }

.empty-state { text-align: center; padding: 40px; color: var(--text2); font-size: 14px; }

.user-detail-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .user-detail-panel { grid-template-columns: 1fr; } }

/* ── Picker field ── */
.picker-field { display: flex; gap: 6px; align-items: center; }
.picker-field input[type="text"] { flex: 1; cursor: pointer; }

/* ── Picker modal ── */
.picker-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 9000; display: flex; align-items: center; justify-content: center; backdrop-filter: blur(4px); }
.picker-modal { background: var(--bg2); border: 1px solid var(--border); border-radius: 16px; width: 560px; max-width: 95vw; max-height: 80vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.picker-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px 12px; border-bottom: 1px solid var(--border); }
.picker-header h3 { font-size: 16px; font-weight: 600; }
.picker-search { margin: 12px 20px; padding: 10px 12px; background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 13px; outline: none; }
.picker-search:focus { border-color: var(--accent); }
.picker-list { flex: 1; overflow-y: auto; padding: 0 12px 12px; }
.picker-item { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-radius: var(--radius); cursor: pointer; font-size: 13px; transition: background .1s; }
.picker-item:hover { background: var(--bg3); }
.picker-item .pi-name { font-weight: 500; }
.picker-item .pi-meta { color: var(--text2); font-size: 12px; }
.picker-item .pi-id { color: var(--text2); font-size: 11px; min-width: 50px; text-align: right; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text2); }